Use all 32 bits of the timestamp when calculating flv duration.
At the moment, duration is mainly set from the metadata packet. If that is not
available, the fallback is checking the low 24 bits of the last packet. This is
not enough for files over 4,6 hours in length, so read all 32 bits instead.
patch by Martin Storsjö, martin martin st

Originally committed as revision 19791 to svn://svn.ffmpeg.org/ffmpeg/trunk

Search for ipmovie signature beyond the start of the file.
This allows to play directly files that combine player and movie into
a single executable like http://samples.mplayerhq.hu/game-formats/interplay-mve/DES3S.EXE

Originally committed as revision 19769 to svn://svn.ffmpeg.org/ffmpeg/trunk

Zeroing pic->motion_val in RV3/4 causes alignment problems on some 64-bit
architectures since stride is multiple of 4 and not of 8, so split
fill_rectangle() calls to operate on 32-bit words instead of 64-bit ones.

Originally committed as revision 19744 to svn://svn.ffmpeg.org/ffmpeg/trunk

The DECLARE_ALIGNED_8 macro is defined to align to 16 bytes instead
the 8 suggested by the name on some CPUs. None of the uses of this
macro ever need 16-byte alignment, cases which once did having been
changed to always specify 16 bytes explicitly.

Originally committed as revision 19737 to svn://svn.ffmpeg.org/ffmpeg/trunk

1.5x faster ff_vorbis_floor1_render_list, 5% faster vorbis decoding on Core2.
1.3x and 3% on G4.
Though I think only part of this speedup is due to my optimizations per se;
some of it is that I got a better roll on the GCC random code generator.
Trivial reorderings of this function have a disproportionate effect on speed.

Originally committed as revision 19726 to svn://svn.ffmpeg.org/ffmpeg/trunk

The first member of struct ScanTable is a simple pointer, extra alignment
of which serves no purpose. The alignment specifier was added along with
some Altivec optimisations also adding a 16-byte-aligned array at the end
of struct ScanTable. Presumably the redundant, outer alignment was added
by mistake. The inner one is clearly sufficient.

Originally committed as revision 19724 to svn://svn.ffmpeg.org/ffmpeg/trunk